[isalist] Re: webmail attachment problems...
- From: "Jim Harrison" <Jim@xxxxxxxxxxxx>
- To: <isalist@xxxxxxxxxxxxx>
- Date: Tue, 2 Jan 2007 07:15:26 -0800
Q) What's the best tool for doing this?
As I said; you'll need to get a network capture, assuming this isn't
SSL-based traffic. Network captures are best obtained using a network
capture tool, such as NetMon (2 or 3), Wireshark or similar. The choice
is yours, since they're plentiful . If this is SSL traffic, I can give
you some tools to help us "see into mind of ISA".
Jim
From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx]
On Behalf Of Paul Laudenslager
Sent: Tuesday, January 02, 2007 7:07 AM
To: isalist@xxxxxxxxxxxxx
Cc: support-team@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
Subject: [isalist] Re: webmail attachment problems...
Hi John & Jim,
I tried it with the original 8.22 templates - any yes, it's fully
updated and patched.
However, the same error occurs... the message I'm receiving...
Technical Information (for support personnel)
* Error Code: 500 Internal Server Error. The HTTP message includes
an unsupported header or an unsupported combination of headers. (12156)
...is what is appearing in the browser FROM the firewall (i'm assuming).
I believe Mr. Harrison is correct in that I need to view what headers
are being passed between the client and the server.
Q) What's the best tool for doing this?
Remember, I have to login and click a particular email with an
attachment (and then click that attachment) before the error appears.
Thanks for everything John (and Jim).
Paul
________________________________
From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx]
On Behalf Of John T (Lists)
Sent: Monday, January 01, 2007 12:42 AM
To: isalist@xxxxxxxxxxxxx
Subject: [isalist] Re: webmail attachment problems...
Are you using the standard webmail templates?
Off subject, but I hope you are running 8.22 fully patched.
John T
eServices For You
"Life is a succession of lessons which must be lived to be understood."
Ralph Waldo Emerson (1802-1882)
-----Original Message-----
From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx]
On Behalf Of Paul Laudenslager
Sent: Sunday, December 31, 2006 8:32 AM
To: isalist@xxxxxxxxxxxxx
Cc: support-team@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
Subject: [isalist] webmail attachment problems...
Hi Everyone,
It's been awhile since I've been here and I hope that everyone is doing
well. I posted this issue once before several months ago but I never
followed through.. (sorry!) so I'm asking for your help again.
ISA 2006 Enterprise Edition
IPSwitch IMail v8.x (on private IP behind firewall)
Users are on public IP's not protected by the firewall.
Users are getting the following error in their browser trying to view
attachments (ie. pdf's and doc files) via webmail.
"Error Code: 500 Internal Server Error. The HTTP message includes an
unsupported header or an unsupported combination of headers. (12156)"
When I access webmail with a PRIVATE IP address (not going through the
firewall) the attachment opens just fine.
When accessing the mail server via POP/IMAP, the attachment works just
fine. Also, even weirder, if a user FORWARDS the email with the
attachment to themselves, it then opens just fine through the
firewall... Hmm...
I've tried deleting/recreating the rules on the firewall to no avail.
I've also created the rule when unchecking the "compression" checkbox...
and unchecking the "enable http compression" checkboxes... to no avail.
My other IMail servers NOT behind the firewall work just fine... only
those behind the 2k6 firewall are failing. NOTE: I also didn't have
this problem with ISA 2k4.
1. What's a good way to view the ISA log files to find out exactly
WHAT HEADER is causing the problem?
2. If I do find out what header is causing this issue, where would
I go from there?
Thanks again for your time and consideration. I really do appreciate
it.
I hope that everyone is having a wonderful holiday season.
Paul L.
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